Oscillating motor-driven fan.



G. G. WAITE.

OSOILLATING MOTOR DRIVEN FAN.

APPLIOATION FILED JAN. 14, 1910.

Patented May 14, 1912.

m Wil UNITED STATES; PA'IENT OFFICE.

CHARLES C. WAITE, OE ROSELLE PARK, NEW JERSEY, ASSIG-NOR TO SI-IEDD ELECTRIC COMPANY, OF ROSELLE PARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

OSOILLATING MOTOR-DRIVEN FAN.

Specification of Letters Patent.

Patented May 14, 1912.

Application filed January 14, 1910. Serial No. 538,144.

To all whom it may concern Roselle Park, in the county of Union and State of New Jersey, have invented a new and useful Oscillating Motor-Driven Fan, of which the following is a specification.

My invention relates to improvements in. motor driven fans which automatically oscillate rotarily in a horizontal plane, thereby altering, from time to time, the direct-ion of the air current from said fan; and the objects of my improvement are to create afan which will perform the above function with a minimum consumption or detraction of energy from the motor, to; create an appliance of the above description of extreme simplicity and to create an appliance of the above nature which can be inexpensively constructed. I attain? these objects by the mechanism illustrated by the accompanying drawing in which:

Figure 1 is aplan of the top of the pedes; tal showing the sprocket and post and washer. Fig. 2. is an elevation of same showing, in section, a part of the motor casing in position upon the post and pivotally aflixed thereon. Fig. 3 is an inverted plan of the bottom of the motor casing,i showing the rack rod H movably attached thereto. Fig. t is a section of armature shaft, and elevation of the reducing gear and grooved ring attached upon the latter. Fig. 5 is a side elevation of same with ring} in normal position. Fig. 6 is the same with ring set obliquely as for oscillatory operation. Fig. 7 is a side elevation of the fan complete, except for the pedestal being broken, the full line posit-ion being where no oscillation occurs, and the dotted lines showing position of grooved ring for oscillatory operation. For this position to be possible and the fan motor to lie in the same vertical plane, the position of the base or pedestal must be conceived to have been changed, with respect to the table or other. place upon which the appliance is placed.

Like most mechanically operated oscillating devices, the energy is applied reactionally, or in other words, the pressure is plied from the movable part as a seat of power, to the relatively immovable portion which causes it to react upon the movable part which then moves as a result.

I create a suitable base or pedestal such as B, which, however without limiting myself, may well be a bracket. Upon the top of this pedestal I immovably afiix horizontally and concentric with said top, a sprocket A. Arising from this sprocket or passing upward through it, whichever may prove mechanically better, is apost or pivot D preferably threaded at its top for the re ception of a nut andwasher F and G. To minimize friction I dispose a suitable Washer or suitable device such as O around the pivot D on top of the sprocket A. The bottom of the motor casing has a suitable hole such as I. (Fig. 3) for the reception of the pivot D. The motor casing E is then mounted upon the pivot D and held there by a suitable washer and nut such as G and F. It must be mounted in such manner that the motor casing as a whole, may revolve in a horizontal plane upon the pivot D. The axis of such rotation is shown by VW, while the plane is indicated by XY. Upon the bottom of the motor casing there is movably affixed a sliding rod H playing in suitable retainers such as J and J This rod is susceptible of rectilinear motion across the bottom of said fan motor, considerably to one side of the center thereof. On the inner side of this rod a rack is cut as at K, the teeth of which fit and engage those of the sprocket A. One end of this rod, as it extends out from said motor, is twice bent so as to bring the line in which it lies in line with the vertical center of the motor.

It will now be noted that, with the motor as a seat of power, if pressure he applied horizontally to this rod, its teeth engaging those of the relatively immovable sprocket, to one side of the vertical axis of rotation, the motor will rotate upon the pivot D in a direction opposite to that of the pressure and, conversely, if the rod be drawn upon from the same seat of energy an opposite course will be described. Therefore my object becomes to cause this rod to pass to and fro by the application of power having the motor as a seat.

Upon the armature shaft N, I afliX a suitable reducing gear such as M, the ofiice of which is to obtain a speed of action lower than that of the said armature shaft. Around the outer periphery of this reducing gear I dispose a ring 0, having a deep groove in its outer periphery. The diameter of the inner periphery of this ring must be somewhat greater than that of the outer periphery of the reducing gear. I movably attach this ring to the reducing gear by some suitable pivotal devices such as the collars andscrews P and P It will now be noted that the arrangement of this ring 0 is such that it may be tilted out of the plane of the reducing gear, swinging upon its pivots P and P and that one side will recede while the other will come forward (see Fig. 6 and dotted lines in Fig. 7 To hold the same in desired position I employ the threaded pin I with the nurl nut Z, held in the bracket U disposed upon the face of the reducing gear. The purpose of the spring T is to prevent accidental interference from breaking the mechanism. Though the pin I may be screwed in and the ring deflected, said ring could be accidentally forced back, the spring giving, and no damage done.

Upon the upper side of the end of the rod H I dispose a ball lug B B fitting into the groove in the ring 0.

Now it is obvious that, with the ring in normal position as in Fig. 5, as the reducing gear and the ring rotate intheir vertical plane, the lug B B will simply pass along in the groove the vertical plane of which never changes and no motion will be given to the rod II. If, however, by manipulation of the nurl nut I, the ring 0 is tilted out of the plane of the gear as in Fig. 6 and as shown by the dotted lines in Fig. 7, as the gear and ring revolve it is obvious that that part of the groove then engaging the lug B B must ever change its vertical plane, constantly approaching and receding from the fan motor, carrying with it in a horizontal plane, the lug B B and the rod H. Thus the rectilinear motion of this rod H is accomplished which creates the oscillation rotarily of the fan motor as before shown. It will be noted that the degree or scope of rotary oscillation of the fan motor will be commensurate with the angle created in the ring 0, which is under the control of the operator by means of the nurl nut I.

F F represents the fan blades.

What I claim as my invention and desire to protect by Letters Patent is:

1. In a motor driven fan, the combination with a motor pivotally mounted upon a suitable base, of an immovable sprocket horizontally disposed upon the top of said base, a rod having a rack at one side, said rack engaging the teeth of said sprocket, such rod horizontally disposed and movably aflixed upon the bottom of the motor casing and susceptible of horizontal rectilinear motion, a lug upon the outer end of said rod, a suitable reducing gear disposed upon the armature shaft of said motor, a ring having a groove upon its outer periphery pivotally disposed upon the outer periphery of said reducing gear, the lug of the rod engaging the groove of the ring, a means for retaining said ring in desired position, all substan tially as set forth and for the uses herein expressed.

2. In a motor driven fan, the combination with a motor susceptible of horizontal rotary oscillation, of an immovable sprocket disposed under said motor and affixed to the base, a suitable reducing gear disposed upon the armature shaft of said motor, a ring having a groove upon its outer periphery, pivotally affixed upon the outer periphery of the reducing gear, a means for retaining said ring in desired position, a rod having a lug upon one end engaging the groove in the ring, said rod horizontally disposed and movably aflixed upon the bottom of the motor casing, at one side of the center thereof, a rack out upon the inner side of said rod, its teeth engaging those of the sprocket all substantially as set forth for the uses and purposes herein expressed.

3. In a motor driven fan, the combination with a motor of a base having an immovable sprocket horizontally disposed at its top, a pivot at the top, the motor mounted upon said pivot and susceptible of horizontal rotation thereupon, a rod horizontally disposed and movably attached to the bottom of the motor casing, said rod having a rack cut upon its inner side, said rack engaging the teeth of the sprocket, a lug upon the end of said rod, a suitable reducing gear disposed upon the armature shaft of said motor, a ring having a groove upon its outer periphery pivotally disposed upon said reducing gear, the lug upon the rod engaging the groove upon the ring, a means for retaining said ring in desired position, all substantially as set forth and for the uses and purposes herein expressed.

4. In a motor driven fan, the combination with a motor pivotally disposed upon a suitable base and susceptible of horizontal rotation thereupon, of a suitable reducing gear disposed ,upon the armature shaft of said motor, a ring having a groove upon its outer periphery pivotally disposed upon the outer periphery of said reducing gear, a bracket upon the face of the reducing gear containing a nurl nut and a pin engaging said ring, with a spring between said bracket and said ring, a rod movably ailixed upon the teeth engaging those of the rack in the rod, bottom of the motor casing at one side of the all substantially as set forth and for the uses 10 center thereof and susceptible of horizontal and purposes herein expressed.

rectilinear motion, a lug upon the end of CHARLES C VAITE said rod engaging the groove of the ring,

a rack out upon the inner side of said rod, Vitnesses: a sprocket horizontally disposed and ilnmov- PETER L. UGI-IETT, ably affixed upon the top of the base, its DEBORAH A. CAHILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

